hoping

Was suppose to get my period on the 25th but I spotted on the 24th for 4 days very lite and small clots.I noticed my boobs getting bigger before this and I was having cramping in very tired hungry ask the time I've taking a million test and all neg.took a ovulating test over the weekend and I was ovulating getting more tired and hungry even mood swings.anyone have a idea if I could be pregnant?I don't have a doc ATM